The controller design and tuning recipe we have used so successfully on this site requires that we bump our process and collect dynamic data as the process responds.

For the heat exchanger and gravity drained tanks study, we generated dynamic data using a step test while the controller was in manual mode. One benefit of this “open loop” step test is that we can analyze the response graph by hand to compute first order plus dead time (FOPDT) dynamic model parameters. These parameter values are then used in rules and correlations to complete the

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